On statistical models for fission track counts

Galbraith, R. F.

doi:10.1007/bf01034498

Cited by 811 publications

(428 citation statements)

References 3 publications

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“…Using isotopic fractionation for cogenetic quartz-muscovite pairs from three different veins at the same general location, we calculate equilibrium temperatures of 394 ± 20°C, 386 ± 30°C and 406 ± 12°C in the veins MC494, MC497, and MC498, The parameters rs and ri represent sample spontaneous and induced track densities; P(c 2 ) is the probability of c 2 for n degrees of freedom where n is number of crystals minus 1. All ages are central ages [Galbraith, 1981] and are reported with a 2s error. lD = 1.55125 × 10 −10 .…”

Section: Oxygen Stable Isotope Analysismentioning

confidence: 99%

Geochronological evidence for continuous exhumation through the ductile‐brittle transition along a crustal‐scale low‐angle normal fault: Simplon Fault Zone, central Alps

et al. 2010

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[1] Major low-angle normal faults juxtapose different structural levels of the crust that record both brittle and ductile deformation. Field relationships alone cannot establish whether these different responses to deformation represent (1) parts of a single process of exhumation along the detachment or (2) two separate events, with the later, more discrete brittle detachment exhuming a fossil ductile shear zone from depth. These two general models are critically assessed for the lowangle normal Simplon Fault Zone (SFZ) in the central Alps. The SFZ shows a spatial transition from a broad ductile mylonitic shear zone to a discrete brittle detachment with identical kinematics. The age of the ductile shear zone and ductile-brittle transition is controversial. We present a detailed geochronological study based on fission track, 40 Ar/ 39 Ar, and Rb/Sr microsampling dating, coupled with structural, petrological, and chemical analyses that provides tight constraints on SFZ timing. Discontinuous mineral cooling ages over a broad range of temperatures across the fault zone argue for fault activity between 20 and 3 Ma. On the basis of synkinematic white mica in low-temperature shear zones and necks of foliation boudinage, the brittle-ductile transition in the footwall could be dated at ∼14.5-10 Ma. Overall, the data presented here are consistent with a continuous transition from ductile shearing to a more localized zone of brittle deformation within the same geological framework, over a period of ∼15 Ma. The SFZ is therefore an example of a telescoped crustal section within a single major lowangle fault, involving a continuous period of exhumation rather than a two-stage structure.

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Section: Oxygen Stable Isotope Analysismentioning

confidence: 99%

Geochronological evidence for continuous exhumation through the ductile‐brittle transition along a crustal‐scale low‐angle normal fault: Simplon Fault Zone, central Alps

et al. 2010

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“…Fission track ages were determined using the zeta calibration method as recommended by Hurford (1990). A pooled age was calculated for those samples in which individual grains do not show a significant variation in fission track age, as determined by the X 2 statistical test (Galbraith, 1981), and uncertainties were calculated using the conventional approach of Green (1981). A central age was calculated for those samples in which individual grains do show a significant spread in fission track age (Galbraith and Laslett, 1993).…”

Section: Fission Track Analysismentioning

confidence: 99%

Differential exhumation in response to episodic thrusting along the eastern margin of the Tibetan Plateau

et al. 1997

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“…All ZFT ages passed the chi-squared probability test (P(χ 2 ) >5 %; Galbraith 1981) belong to one homogeneous age population. The radial plots of single grain ZFT ages are shown in Fig.…”

Section: Fission Track Datamentioning

confidence: 99%

“…Data processing was carried out using the TRACKKEY program, version 4.2.f (Dunkl 2002). The probability of grains counted in a sample belonging to a single population of ages was assessed by a P(χ 2 ) probability test (Galbraith 1981). Long axes of the FT etch-pits (D par method; Donelick 1993;Burtner et al 1994) were measured as a proxy for annealing properties.…”

Section: Fission Track Analysismentioning

confidence: 99%

Geological evolution of the southwestern part of the Veporic Unit (Western Carpathians): based on fission track and morphotectonic data

Vojtko

Králiková

Andriessen³

et al. 2017

Geologica Carpathica

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On statistical models for fission track counts

Cited by 811 publications

References 3 publications

Geochronological evidence for continuous exhumation through the ductile‐brittle transition along a crustal‐scale low‐angle normal fault: Simplon Fault Zone, central Alps

Geochronological evidence for continuous exhumation through the ductile‐brittle transition along a crustal‐scale low‐angle normal fault: Simplon Fault Zone, central Alps

Differential exhumation in response to episodic thrusting along the eastern margin of the Tibetan Plateau

Geological evolution of the southwestern part of the Veporic Unit (Western Carpathians): based on fission track and morphotectonic data

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